My NNS has been stolen,Please help me

[xiaobing]

Mnemonic words are invalid

Hello, everyone,My NNS account can not be logged in, I have two Yubikeys, yesterday when I logged in, I was prompted with an unknown identity anchor, I tried to use mnemonic words to recover, the prompt was invalid.I can make sure that my Yubikey was logged in before yesterday, because I log in every few days. I signed up on July 15th.I used a camera to take pictures and save them, and I have had the experience of using mnemonic words to recover accounts.Please help me, thank you.